Automatic-alarm tire-valve.



F. F, SHMGRE.

AUTOMATIC? ALARM TIRE VALVE. rrLIoA'rIoH mman mm1?, 190e.

m0, lm/ENTOR.

WHA/5555s FRANK F. ASHMOBE, 0F KANSAS CITY, MISSOURI.

Specication of Letters Patent.

AUTOMATIC-ALARM; TIRE-VALVE.

Application filed .Tune 17, 1909. Serial No. 502,794.

To all whom it may concern:

Beit known that I, FRANK F. AsHMoRE, a citizen of the United States,residing at Kansas City, in the county of Jackson and State of Missouri,have invented certain new and useful Improvements in Automatic- AlarmTire-Valves, of which the following is a specification.

My invention relates to tire valves, and

more particularly to a tire valve, having a suitable alarm in connectiontherewith, for

Iinstance a whistle, automatic in its action,

. specification, Figure 1 is a side. elevation of myimproved valve. Fig.2 is a central vertical sectional view therethrough, and, Fig.

` 3 is a view illustrating the practical application of my improvedvalve, and showing a slightly modified form thereof. j

In accordance with my invention, and

' with special reference to Figs. 1 and 2, I

provide a casing 1, having tubular ends 2 and 3, and a longitudinalcentral opening f1,

-communicating between said tubular ends` and provided with anenlargement 5 adjacent the tubular end 2, forming a shoulder at itsbase. The tubular end 3 is threaded Aas shown for connection upon thevalve tube A of a tire B shown in Fig. 3. The body portion of the casing1, between its tubular ends 2 and 3, also has a bore 6 extending4'inwardly 'from one side thereof, and at right "angles to andcommunicating with, its -longitudinal opening 4, said bore 6 having anenlarged outer portion communicating with the interior .of an internallyand externally threaded'tubular extenslon 7 in which is adjustablymounted a threaded central aper- 1 outer tured block 8, against theinner ysurface of which is seated a disk valve 9, having the ortion 10of its stem projecting throng the aperture of saidblock, and the innerend 11 of its stem, extendin inwardly i )of the bore .6.' A spring 12coile about the inner end of bore 6 and the inner surface of valve disk9, serves to hold said valve outwardly and seated against block 8, atall tlmes except when its stem portion 10 is pressed inwardly in pumpingup the air. The usual cap 13 engages upon the external face of thetubular extension 7, to prevent the entrance of foreign matter.

The tubular end 2 of casing 1 is provided wlth a gasket ring 14 in itsinner end, forming a valve seat for the inner tubular end 15 of the highpressure valve 16, which valve 16l has an outer tubular end 17 and acentral longitudinal opening 18 communicatmg between its said tubularends 15 and 17. Valve 16 is further provided with an external circularshoulder 19, surrounding the same at the base of its tubular end 17, andwith radial openings 20 extending through, its wall from its vcentrallongitudinal opening 18.

The extremity of the tubular end 2 of casing 1 is externally threaded,and the tubular end 17 of valve 16 projects centrally and 'exteriorlythrough a bushing 21, the sleeve portion of which is internally threadedlto be secured Vupon the threaded extremity of the tubular end 2 ofcasing 1, whereby/@o adjust and regulate the force of a spring 23 coiledabout the tubular end 17 of valve 16, and compressed between the end ofsaid-bushing21 and the shoulder 19 of said valve, whereby to force itsinner tubular end 15 against the ring 14 forming a seat therefor. Theinner tubular end 15 of the lvalve 16 is of sufficiently reduceddiameterin comparison to the tubular end 2 of casing 1, within which itextends, to provide an airspace 24, and a whistle 25 which may 'beformed integral with casing 1 as shown in Figs'. 1 and 2has a port 26leading there-l to from said air space 24. Thus, when the ressure withinthe tire rises above a seected pressure, to which sprin 23 is adjusted,valve 16 is forced outwardly from its seat, and the air rushing throughport 26 and through whistle 25, sounds an alarm. The outer surface ofthe tubular end 2 of casing 1 may be provided with a pressure gage 27,shown in Fig. 1, the circular edge of the sleeveportion 22 of bushing 21forming an indicator to such gage.

A disk 28 is seated against lthe inner end Patented .rune a, icio.v

sent.

1, and having coiled about said stem porltion 29, a. s 'ring 3()compressed betweenthe base of sai enlargement 5 and the disk 28 vwhereby to hold said disk seated. The outer stem portion 31 of disk 28rejects through the central opening 18 of va ve 16, and a circular plate32 movable within the tubular extension 17 of said valve 16 pressesagainst said end ot said stem, under actuation of a coil spring`33compressed between the .same and the inner end of plug 34 threadedwithin the exterior portion of said tubular end '17.y and having aknurled outer head 35 by which it maybe adjusted. The head 35 has anindicator 36 extending upon the outer surface of the exterior portion oftubular extension 17, which tubular extension 17 has a pressui'e gage37. Plug 34 is adjusted in use, to regulate spring 33 to a pressureequal to that of about ten pounds below the pressure sutlicient to movevalve 16 from its Thus the pressure Within the tire ranges wit-hin tenpounds without actuating the alarm, but when the same falls below theten pounds, spring 33 forces disk 28 inwardly from its seat, and the airescapes through openings 20 through the wall of valve .16 and throughport 26 to sound the whistle..

ln the practical application of my invention, in connection withautomobile wheels, as shown in Fig. 3, in view of the fact of thenecessity at times, for travel upon muddy7 roads, where the whistle 25might be clogged up, I may form the whistle separate from the casing land secure the same by clips 38 upon a spoke ofthe wheel at one side ofthe valve, and at the inner end of the spoke near the hub, where thewhistle will be more protected, connecting the whistle with the air port26 by a tube 39 having suitable connections in its ends.

Having fully described my invention, I claim:

l. A tire valve comprising a Casin having a main air opening, an alarmevice, high and low pressure valves controlling communication betweensaid opening and said alarm device, and a valved air inlet at rightangles to, and communicating with, such main opening, between saidpressure valves and one end of the said casing, which latter end isformed for engagement with a tire inlet tube, substantially asdescribed.

2. A tire valve ,comprising a casing having a main longitudinal bodyopening, and a tubular end portion, its opposite .end being threaded forengagement with a tire inlet tube, an alarm device, high and lowpressure valves mounted within said tubular end, and controllingcommunication between said body openingand said alarm device, and avalved air linlet tube, the opening in which extends at right angleswithin the casing and communicates with the body opening thereof,between the said pressure valves and its saidl threaded end,substantially as described.y

3. A vtire valve comprising a casing having one end thereof formed forengagement with a tire inlet tube, and having a tubular opposite end anda body opening communicating between said ends, a tubular high pressurevalve member having its inner end seated inwardly against the inner endof said tubular casing end, and provided with openings through lts wall,an alarm device having communication with the tubular casing end .aroundsaid valve member, and a low pressure valve member seated outwardlywithin the inner end of said high pressure valve member, between theinner end and the openings of the latter, substantially as described.

4. A tire valve comprising a casing having one end threaded forengagement with a tire inlet tube, and havingva tubular opposite end anda body opening communicating between said ends, a high pressure member.having an inner tubular end seated inwardly againstl the inner end ofsaid tubular casin end, and provided with an annular shoul er, a bushingthreaded upon the extremity vof said tubular casing end, said valvemember having a tubular outer end ortion projecting exteriorly throughsaid usliin and provided with openin sthrough its wal a springsurrounding sald tubular portion of said .valve member and compressedbetween its said shoulder and thel said bushing, and adjustable by meansof the latter, and an alarm device for communication with said `tubularcasing end around said valve member, a low4 pressure valve member seatedoutwardly against the end of the tubular inner end of said high pressurevalve member, and provided with an outwardly projecting stem, a plugadjustably threaded withm, and closing the outer end of the outertubular portion of said high pressure valve member, and a springcompressed between said plug and the outer end of the stem of said lowpressure tion between said tire and said alarm device, In testimonywhereof I afzr my signature and establishing such communication when inpresence of two Witnesses.

the pressure within said tire falls below a FRANK F ASHMOREpredetermined degree, and means arranged 5 upon said casing foradmitting of the intro- Witnesses:

duction of air into said tire, substantially as ALBERT L. BENNETT,

described. CLOID E. KEPNER.

